Key words: carbon nanotubes, rapid expansion of supercritical suspensions, dispersion
The dependence of the degree of CNT deagglomeration on the multiplicity of their treatment by the method of rapid expansion of supercritical suspensions (RESS) under various conditions has been studied. It was shown that double treatment by the RESS method makes it possible to increase the degree of CNT deagglomeration more effectively than a single one. Three-fold treatment in the case of nitrogen leads to a slight increase in the degree of dispersion compared to two-fold. In the case of CO2, three-fold treatment can lead to both an increase and a decrease in the degree of dispersion compared to twofold. When nitrogen is used as a dispersion medium, changes in temperature and pressure do not lead to a change in the degree of dispersion of CNTs. When using CO2, a decrease in fluid density ensures greater efficiency of CNT processing.
doi:10.1134/S1990793124701318